The parameters are:
        w       width of A,B,W
        fa      final adder architecture fastcla,csa,cla,clsa
        mult    multiplier type auto,nonbooth,booth
        ir    	programmabel internal rounding point (area-vs-accuracy)

The FFT demo illustrates carrysave and internal rounding.

Pull down the "File" menu and select "Get Parameters".
This will extract the default parameters from the
module.  For demo purposes the default parameter
values can be used as is.

Pull down the "View" menu and select "Table Summary".
Click on "Do All" and note the area and timing #'s
Pull down the "View" menu and select "Design Report"
Scroll down to the "Internal Rounding Error analysis" report
and note the error generated due to internal rounding. Should be "0"
as parameter "ir" is set to 0.

Change parameter "ir" to 4 and and note the area and timing #'s
in the "Table Summary".
Also note the error in the "Internal Rounding Error analysis" report.

Automatic pipelining can be used.  From the "Synthesis" pull down
menu, select "Pipeline".  In the "Optimization" field enter the
delay goal in ps.
